[1] Many signs in bathroom stalls explain that the water pressure of the flushing system is low. Hence patrons are asked to toss wastepaper into a bin instead. However, according to Pyo Hye-ryeong, who heads a nongovernmental organization that advocates sanitary public bathroom facilities, water pressure is rarely a cause of clogging in public bathrooms in South Korea.

[2] The practice of throwing out used toilet paper into trash cans began here in the late 1980s, after the 1988 Seoul Summer Olympics, according to Baek Chung-yeop, an official at the Ministry of the Interior.

*practice: 관습, 습관, 관행*throwing out: 버리다*according to: ~에 따르면

[3] Before the Olympics here, nearly 70 percent of all public bathrooms in Seoul had squat toilets without plumbing systems, he said. “Very often the trash cans are not emptied frequently enough,” she said. “Sometimes they remain piled up in a closed space for more than 10 hours. Anyone with common sense wouldn’t think such an environment is in any way hygienic.”